T80.A10S ICD-10-CM Code: Non-ABO incompatibility with acute hemolytic transfusion reaction, sequela
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FY 2026 Apr update / Injury, poisoning and certain other consequences of external causes (S00-T88) / Complications of surgical and medical care, not elsewhere classified (T80-T88)
T80.A10S
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceNon-ABO incompatibility with acute hemolytic transfusion reaction, sequela
Non-ABO incompatibility with acute hemolytic transfusion reaction, sequela
CMS-HCC V28
00
RAF 0
CMS-HCC V24
00
RAF 0
ACA/HHS
00
RAF 0
ESRD/PACE
00
RAF 0
RXHCC
00
RAF 0
Code Trumping
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Code Book Path
Inclusion Terms
Official- Acute hemolytic transfusion reaction (AHTR) due to non-ABO incompatibility
- Non-ABO incompatibility with hemolytic transfusion reaction less than 24 hours after transfusion
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for T80.A10S in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for T80.A10S in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for T80.A10S in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for T80.A10S in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for T80.A10S in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for T80.A10S in this effective period.
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is T80.A10S an HCC code?
No. T80.A10S is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
T80.A10S is the ICD-10-CM diagnosis code for non-abo incompatibility with acute hemolytic transfusion reaction, sequela. T80.A10S sits in the ICD-10-CM chapter for injury, poisoning and certain other consequences of external causes (s00-t88), within the section covering complications of surgical and medical care, not elsewhere classified (t80-t88).
T80.A10S is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
T80.A10S is a billable ICD-10-CM code that can be reported on claims but does not currently contribute to a Medicare Advantage member's RAF score under any CMS risk adjustment model (V28, V24, ESRD, or RxHCC). Coders reviewing T80.A10S should check whether additional documentation would support a more specific child code in the same hierarchy that does map to a payment HCC, capturing the correct specificity is the highest-impact RAF improvement available within accurate coding.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for T80.A10S sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.